We think it is a discus because he is holding a round flat object that could be a discus. We can also see that the people did the Olympics naked. The contestants were all men. All of this tells me that only men were allowed to do the Olympics and they did it naked and they were strong.

We can see that this man is throwing a discuss and we know all these people are all naked. We know that all these people are men so this tells me that only men are allowed to participate in the Olympics. We can also tell that these men all look strong and fit.